Goldsource&reg; Step Up and Down Voltage Converter Transformer THG-200 - AC 110/220 V - 200 Watt Step Up/Down transformer converts 220-240 volts down to 110-120 Volts or 110-120 volts up to 220-240 volts. Ventilated design ensures safe, continuous use Easy operation Free European to American outlet plug adapter included CE certified & 3-year manufacturers limited warranty